UnityEngine.Mathf.Sqrt C# (CSharp) Method

        public static float Sqrt(float f)
        {
            return (float)Math.Sqrt(f);
        }

 public static float InOut(float k)
 {
     if ((k *= 2f) < 1f)
     {
         return(-0.5f * (Mathf.Sqrt(1f - k * k) - 1));
     }
     return(0.5f * (Mathf.Sqrt(1f - (k -= 2f) * k) + 1f));
 }